User`s Guide Programmable DC Power Supply Model 382280
Contents
1. feeds After Terminal or HyperTerminal is setup type in the commands as described in the previous examples 8 382280 EU EN V1 7 1 12 Specifications Programmed Voltage and Current after 5 minute warm up 1 Range Resolution Accuracy Voltage V C V 0 to 40V 0 05 9mV Current A C C 0 to 5A 0 2 9mA Voltage and Current Display Read back eee Voltage V C C 0 1 to 40V 0 1 12mV Current A C V 0 05 to 5A 0 2 12mA Display Programmable Voltage Output Programmable Current Output Resolution Fixed Outputs Memory Accuracy Response Time Temperature Coefficient Load Regulation Line Regulation Ripple and Noise Open Circuit OCP detection C V or C C detection Short Circuit Protect Power Source Dimensions Weight Backlit Dot Matrix 2 line Display 0 000 to 40 000VDC 0 000 to 5 000ADC 1mV 1mA 5V 2A and 3 3V 3A 199 locations Adjustable Voltage 0 05 x9mV Adjustable Currrent 0 2 9mA Fixed 5V 0 25V Fixed 3 3V 0 16V 150 ms 100ppm C 1mV Amp No effect if line voltage is within 90V and 130V for 115V power 200V to 240V for 220V power 0 40V 0 5A lt 3MV ms C V lt 3MAms C C 5V 2A 3 3V 3A 10MVims 20MV ms Current gt 0 05A Current gt 0 05A 7s When the 5V or 3 3V output is less than 1V shorted one of the preceding alert symbols will be shown on the LCD 110 220VAC 50 60Hz 310 x 250 x 135mm 122. seconds Use the ENTER key to confirm entries V A Press to toggle between voltage V and current A on the display OCP Over Current Protection Press to enable disable OCP OVP Over Voltage Protection Press to program the OVP value defaults to 40V Numeric keypad and period button ENTER Press to confirm entries V DOWN Arrow Press to decrease a programming value A UP Arrow Press to increase a programming value RIGHT Arrow Press to move the cursor to a new location in a row POWER ON OFF Press to turn the supply on or off Rubber feet Dot matrix display GND Ground terminal connected to the chassis of the unit COM Common terminal for the 5V and the 3 3V output 3 3V 3A Positive terminal for the 3 3V output If more than 3A is drawn the output will be lower than the 3 3V specified 5V 2A Positive terminal for the 5V output If more than 2A is drawn the output will be lower than the 5V specified Positive Terminal for the 40VDC 5ADC output This terminal is physically connected to terminal 22 Use terminal 21 not COM as the negative terminal for best accuracy Note that terminal 21 23 and COM are connected Negative terminal for 40VDC 5ADC terminal 20 output Positive Terminal for the 40VDC 5ADC output This terminal is physically connected to terminal 20 Use terminal 23 not COM as the negative terminal for best accuracy Negative terminal for 40VDC 5ADC terminal 22 outpu
3. 2 x 9 9 x 5 3 3 8kg 8 4 Ibs Copyright 2012 Extech Instruments Corporation a FLIR company All rights reserved including the right of reproduction in whole or in part in any form www extech com g 382280 EU EN V1 7 1 12
4. Step lt cr gt enable ATS function Starting step is 100 recalled first in the previous statement and the ending step is 110 recalled after step 100 lt cr gt Inquire all data V 40 000 40 000 CV A 01 000 00 999 CV OCP 10 00 ENABLE OVP 40 000 5V OK 3 3V OK OPER CV V cr obtain the voltage value V 40 000 40 000 CV A cr obtain the value of current A 01 000 00 999 CV Note The first set of data following the character V or A is the programmed value while the second set of data is the read back A D value The third set of data is the status CV CC of the unit If the third set of data shows OV the unit is placed in the STBY mode The unit sends out a new line and carriage return after each line of data Using Windows Terminal or HyperTerminal program for PC Communication The Terminal or the HyperTerminal program is included in all Windows operating systems Typically it is located using the following path START Menu gt Programs gt Accessories gt Communications gt Terminal or HyperTerminal When in the Terminal or HyperTerminal program go to PROPERTIES and configure as follows 1 In the CONNECT TO field select COM1 or COM2 depending on which port is being used 2 In the CONFIGURATION section select the following data format Baud rate 9600 no parity 8 data bits 1 stop bit and no flow control 3 In the ASCII SETUP section click on echo typed characters and Send line ends with line
5. User s Guide EXTEC INSTRUMENTS A FLIR COMPANY Programmable DC Power Supply 200 Watt 40 Volts 5 Amps Model 382280 H EX j INSTRUMENTS en OPER 40 000V CV 2 345A PROGRAMMABLE DC POWER SUPPLY 3 3V 3A 5VI2A COM s ce 2 3 gt 0000 Some E sec OCP 8 9 Ji Y POWER es v a ove 0 ENTER a Introduction Congratulations on your purchase of the Extech 382280 Programmable DC Power Supply This 200 watt power supply offers an adjustable 5ADC 40VDC output plus fixed outputs 5VDC and 3 3VDC Programming features include custom over voltage current protection with delay timer 199 test storage and automated testing Careful use of this power supply will provide years of reliable service Safety Symbols N WARNING Please read the statement thoroughly to prevent injury or loss of life and to prevent damage to this product n Earth Ground Terminal 2 382280 EU EN V1 7 1 12 Fr
6. appear in the display where xxx 0 tp 199 will be the memory location To view the setup in any other location enter the setup number and press ENTER If a three digit number is entered pressing ENTER is not necessary Press RECALL to exit the display Automatic Test Sequencing ATS In ATS mode the unit automatically cycles through a series of stored test setups The first and last steps are programmable and the sequence will include all steps between the first and last steps Each test setup memory location represents one step The duration the step is programmable from 1 to 60 seconds and is programmed when the steps are stored Note Initial setup and sequencing should be performed in the STBY mode to verify proper operation without an active output Setup and Operation of Automatic Test Sequencing ATS 1 4 9 6 To set the LAST and FIRST step of the sequence a Press the RECALL button b Use the numeric keypad to enter the three digit test setup location number for the last step RCLO18 for example and press ENTER c Use the numeric keypad to enter the three digit test setup location number for the first step RCLOO1 for example and press ENTER d Press RECALL The time duration for each step is stored with each step in the storing process To begin the test sequencing press and hold the RECALL until the beeper sounds and the stair step icon appears The sequencing will automatically begin a si
7. d Press the ENTER button to select the value To clear any programming entries press the CE button Press the STBY OPER button to enable the power supply output Note If the output goes to zero the current or voltage limit may be set too low To change the output values during operation use the RIGHT amp UP DOWN buttons The user can monitor the output voltage by connecting a DMM as shown above Warning When the unit is placed in STBY mode the output is OV however the output terminals are still physically connected to the internal circuit 4 382280 EU EN V1 7 1 12 Over Voltage Protection OVP Over Voltage Protection OVP allows the user to set a maximum permissible output voltage If the voltage limit is exceeded the unit will display OVP and revert to the STBY mode Setting the Over Voltage Protection OVP value 1 In the STBY mode press the OVP key appears in the display 2 Enter a value from the keypad range of 0 001 to 40V 3 Press the ENTER key to store the value Viewing the Over Voltage Protection OVP value The OVP value can be viewed when the supply is switched from the OPER mode to the STBY mode When switched OVP will briefly appear in the upper display line and the value will briefly appear in the middle of the lower line of the display Over Current Protection OCP Over Current Protection OCP allows the user to set a maximum permissible current If the current limit is exceeded the uni
8. ngle cycle through the programmed steps Observe the output for proper operation Press the OPER STBY key to activate the output Press the OPER STBY to return to the standby mode or press CE to exit the sequencing mode Note The ATS session will be terminated if any command is received via the RS 232c interface Note For continuous cycling hold the RECALL button while turning power on 6 382280 EU EN V1 7 1 12 RS 232 PC Communications Interface RS 232 data format Baud rate 9600 Parity none Data bits 8 Stop bits 1 Flow control none RS 232 Connection Connect the supplied communications cable to the rear of the power i 5 3 Ta supply and to the communications port of the PC e O OO y O O O O Power Supply PC Pil 2 cese Pin 2 RX ree Ret ET S Pin 3 TX Pin 4 Pin 4 DTR Pin 5 Pin 5 GND RS 232 Commands The command format is as follows Command Parameter lt Carriage Return cr gt For example V 20 5 sets output to 20 5VDC An ASCII code for Carriage Return must be sent together with the command or commands Commands will not be processed until a Carriage Return is received Note that the unit can process up to 50 characters If more than 50 characters are received the unit will clear the entire command buffer Summary of Commands STBY cr place the unit in standby mode OPER cr place the unit in operating mode V XX XXX cr set
9. ont Panel Description 20 21 22 23 24 15 ff S OPER 40 000V PROGRAMMABLE CV 1 2 24 2 345A DC POWER SUPPLY J 12 19 3 3VI3A 5VI2A COM GND SEER 1 2 3 gt 1 1 Se LEE E eE E xu 1 O 18 0 o 9 9 3 ree ren 4 5j 6 A 9 17 em 3 1 aee Cz 8 C9 Cv pa T m r VIC 13 c Eee ca corem 16 T 8 20 22 5 OPER STBY Operation Standby button Press to enable disable the output When the supply is in the STANDBY mode the output is O volts RECALL Press to call up stored output sets or to activate Automatic Test Sequencing STORE Press to save the present V A output set to memory Use the numeric keys not the arrows to select a storage location from 000 to 199 and then press ENTER SEC Seconds Press to enter time in
10. t CE Cancel Entry Press to cancel a programming entry 3 382280 EU EN V1 7 1 12 Operation Preparation for use Basic Test Setup Diagram Place the supply on a flat level surface Select the input voltage using the switch on the rear of the supply see diagram above Make sure the sides and the back of the unit are not blocked Leave at least 2 5 cm of space for good ventilation AN WARNING Line Voltage Selector Switch Setting and Outputting Voltage and Current NOTE The 3 3V and 5V fixed outputs are always active when power is turned on NOTE The power supply enters the STBY stand by mode when the power is turned on The output 1 values time delay and OVP are the same as they were before the power was turned off Connect the power supply output to the circuit or device under test before pressing the OPER STBY button Check that the displayed voltage and current output settings are as desired To change the values of voltage or current use the V A button to move the underline cursor to first digit of the voltage or current display enter the value directly from the numeric keypad and then press ENTER or a Move the underline cursor to voltage or current with the V A button b Use the RIGHT arrow button to select the digit to change c Use the UP DOWN arrow buttons to change the digit value
11. t automatically reverts to the STBY mode Setting the Over Current Protection OCP value 1 In the STBY mode press the V A key to move the underline cursor to the A display 2 Press the OCP key and enter the value from the keypad 0 001 to 5A 3 Press the ENTER key to store the value Enabling the Over Current Protection OCP Press the OCP button to enable disable the OCP function OCP will appear in the display when the function is enabled Over Current Protection OCP Time Delay The OCP shutdown can be delayed up to 600 seconds using the SEC function 1 Press the SEC key will appear in the display 2 Enterthe value from the keypad 0 01 to 600 seconds and press the ENTER key 9 382280 EU EN V1 7 1 12 Automated Testing Storing Test Setups T 2 3 4 Set the Voltage and Current values as desired Press the SEC button and set the time in seconds This time will be associated with the step if the automatic step output function is selected Press the STORE button to save the values STRxxx will appear in the display where xxx 0 to 199 will be the memory location Press ENTER to store the value in the displayed location or enter a new location number from the keypad and press ENTER If a three digit number is entered pressing ENTER is not necessary Recalling Test Setups 1 2 3 Press the RECALL button to view the setup in a memory location RCLxxx and the stored values will
12. the voltage output A X XXX cr set the current output SEC xxx xx cr enter time in seconds OVP xx xxx lt cr gt enter desired voltage value for over voltage protection OCP 0 cr disable the over current protection OCP 1 cr enable the over current protection STORE xxx lt cr gt store the present output values to memory location xxx RECALL xxx cr recall an output setup from memory location xxx STEP cr enable the ATS Auto Test Sequencing function cr retrieve all data V cr retrieve the voltage value A cr retrieve the current value OCP cr retrieve the status of OCP OVP cr retrieve the voltage value for OVP SEC cr retrieve the time value in seconds STATUS cr retrieve the STBY OPER OCP OVP amp 5V 3 3V fixed output status Note All commands are case insensitive 7 382280 EU EN V1 7 1 12 Example of an RS 232C Program V 20 5 cr program 20 5V A 1 25 cr program 1 25A V 30 A 2 SEC 20 lt cr gt program 30V 2A for 20 seconds OVP 35 lt cr gt set 35V for the over voltage protection SEC 60 lt cr gt enter 60 seconds OCP 0 lt cr gt disable OCP Open circuit protection OCP 1 lt cr gt enable OCP STORE 120 lt cr gt store current V A values in memory location 120 RECALL 100 lt cr gt recall V and A values stored in memory location 100 RECALL 110 lt cr gt recall V and A values stored in memory location 110
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